The Blue Lake

Great Spot for Photos

Be enchanted by the vivid blue waters of the Blue Lake, a unique volcanic crater lake nestled in South Australia. Witness the striking color changes during the year and learn about the geological wonders that formed this spectacular site.

About The Blue Lake

The Blue Lake is a spectacular volcanic crater lake situated in the city of Mount Gambier, South Australia. The lake is renowned for its striking blue color, which is most vivid between December and March, and its crystal-clear water. The lake’s vivid hue is a result of the reflection and scattering of sunlight by the lake’s water, which is exceptionally clear due to the limestone filtration. The Blue Lake is not only a popular tourist destination for its natural beauty but also serves as the primary source of drinking water for Mount Gambier. Visitors can enjoy walking trails around the lake, guided tours, and lookout points that offer stunning panoramic views of the lake and the surrounding region.

The Blue Lake History

The Blue Lake was formed approximately 5,000 years ago as a result of volcanic activity, with the lake now occupying one of the four craters of the extinct Mount Gambier volcano. The region has a long history of human habitation, with the local Boandik people being the traditional custodians of the land. European settlers arrived in the area during the early 19th century, with the town of Mount Gambier being officially established in 1861. The Blue Lake has long been a source of fascination and wonder, with its unique color and geological history making it a popular attraction for both tourists and locals.

The Blue Lake FAQs

The Blue Lake was formed as a result of volcanic activity approximately 4,500 years ago. It is classified as a volcanic maar, which is a shallow, broad crater created by explosive volcanic eruptions.

The formation of the Blue Lake began when rising magma from deep within the Earth’s crust encountered groundwater. As the molten lava heated the water, it turned into steam, causing a series of violent explosions. This interaction between magma and water led to the ejection of volcanic debris, including ash, rocks, and other materials. Eventually, the volcanic activity ceased, leaving a massive crater behind.

Over the centuries, rainwater gradually filled the crater, transforming it into the alluring, sapphire-blue lake we know today. The Blue Lake’s vivid hue is a result of its depth, water clarity, and the reflection of sunlight. During summer months, the lake’s color intensifies, making it an even more breathtaking sight.

Swimming in the Blue Lake at Mount Gambier is not allowed, as it is a protected water source that supplies drinking water to the surrounding community. Due to its importance as a freshwater reservoir, various safety measures and restrictions are in place to preserve the lake’s pristine condition and water quality.

However, visitors can still enjoy the breathtaking beauty of the Blue Lake from its numerous viewing platforms and walking trails that circle the perimeter. These vantage points offer stunning panoramic views of the vibrant blue waters, the surrounding landscape, and the fascinating geological features that make this destination so unique.

Amenities

Public Toilets

Free Parking

Viewing Area

Wheelchair Access

Walking Trails

Handy to Know

Please note that wheelchair access may be limited in some areas around the Blue Lake, and it is advisable to check with the local authorities or the Mount Gambier Visitor Centre for accessibility information.